EMPLOYEE BENEFIT PLANS - Changes in Pension and Other Post-Retirement Benefit Obligations, Fair Value Of Plan Assets, as well as Amounts Recognized in the Consolidated Balance Sheets (Detail) - USD ($) $ in Millions	12 Months Ended
	Jan. 02, 2021	Dec. 28, 2019	Dec. 29, 2018
Amounts recognized in the Consolidated Balance Sheets
Non-current benefit liability	$ (642.6)	$ (609.4)
Other Postretirement Benefits Plan
Change in benefit obligation
Benefit obligation at end of prior year	52.2	44.8
Service cost	0.6	0.3	$ 0.5
Interest cost	1.5	1.6	1.6
Special termination benefit	16.1	0.0	0.0
Settlements/curtailments	0.0	0.0
Actuarial loss (gain)	2.9	(8.6)
Plan amendments	0.0	0.0
Foreign currency exchange rate changes	(1.8)	0.0
Participant contributions	0.0	0.0
Acquisitions, divestitures, and other	0.0	2.4
Benefits paid	(4.5)	(5.5)
Benefit obligation at end of year	61.2	52.2	44.8
Change in plan assets
Fair value of plan assets at end of prior year	0.0	0.0
Actual return on plan assets	0.0	0.0
Participant contributions	0.0	0.0
Employer contributions	4.5	5.5
Settlements	0.0	0.0
Foreign currency exchange rate changes	0.0	0.0
Acquisitions, divestitures, and other	0.0	0.0
Benefits paid	4.5	5.5
Fair value of plan assets at end of plan year	0.0	0.0	0.0
Funded status — assets less than benefit obligation	(61.2)	(52.2)
Unrecognized prior service cost (credit)	0.6	2.0
Unrecognized net actuarial loss (gain)	(3.2)	1.1
Net amount recognized	(65.0)	(53.1)
Amounts recognized in the Consolidated Balance Sheets
Prepaid benefit cost (non-current)	0.0	0.0
Current benefit liability	(6.8)	(4.5)
Non-current benefit liability	(54.4)	(47.7)
Net liability recognized	(61.2)	(52.2)
Accumulated other comprehensive loss (pre-tax):
Prior service cost (credit)	(0.6)	(2.0)
Actuarial loss (gain)	(3.2)	1.1
Pension and other postretirement benefit plans, AOCI before tax	(3.8)	(0.9)
Net amount recognized	(65.0)	(53.1)
UNITED STATES
Change in benefit obligation
Benefit obligation at end of prior year	1,325.4	1,260.9
Service cost	6.8	12.3	7.5
Interest cost	35.3	47.1	42.8
Special termination benefit	0.0	0.0	0.0
Settlements/curtailments	0.0	0.0
Actuarial loss (gain)	(123.3)	(130.4)
Plan amendments	0.1	1.4
Foreign currency exchange rate changes	0.0	0.0
Participant contributions	0.0	0.0
Acquisitions, divestitures, and other	4.0	(10.0)
Benefits paid	(82.6)	(116.7)
Benefit obligation at end of year	1,404.3	1,325.4	1,260.9
Change in plan assets
Fair value of plan assets at end of prior year	1,103.5	1,020.7
Actual return on plan assets	160.9	190.0
Participant contributions	0.0	0.0
Employer contributions	13.7	19.5
Settlements	0.0	0.0
Foreign currency exchange rate changes	0.0	0.0
Acquisitions, divestitures, and other	(4.0)	(10.0)
Benefits paid	82.6	116.7
Fair value of plan assets at end of plan year	1,191.5	1,103.5	1,020.7
Funded status — assets less than benefit obligation	(212.8)	(221.9)
Unrecognized prior service cost (credit)	(3.8)	(4.7)
Unrecognized net actuarial loss (gain)	278.7	266.2
Net amount recognized	69.7	49.0
Amounts recognized in the Consolidated Balance Sheets
Prepaid benefit cost (non-current)	0.0	0.0
Current benefit liability	(7.3)	(7.6)
Non-current benefit liability	(205.5)	(214.3)
Net liability recognized	(212.8)	(221.9)
Accumulated other comprehensive loss (pre-tax):
Prior service cost (credit)	3.8	4.7
Actuarial loss (gain)	278.7	266.2
Pension and other postretirement benefit plans, AOCI before tax	282.5	270.9
Net amount recognized	69.7	49.0
Foreign Plan
Change in benefit obligation
Benefit obligation at end of prior year	1,449.9	1,305.3
Service cost	16.1	14.6	15.2
Interest cost	22.5	30.3	28.6
Special termination benefit	0.2	0.0	0.0
Settlements/curtailments	(5.5)	(6.0)
Actuarial loss (gain)	(112.0)	(140.6)
Plan amendments	0.1	0.7
Foreign currency exchange rate changes	84.9	25.8
Participant contributions	0.3	0.3
Acquisitions, divestitures, and other	6.5	(2.2)
Benefits paid	(51.7)	(59.5)
Benefit obligation at end of year	1,622.3	1,449.9	1,305.3
Change in plan assets
Fair value of plan assets at end of prior year	1,093.5	974.3
Actual return on plan assets	119.3	133.2
Participant contributions	0.3	0.3
Employer contributions	22.0	22.6
Settlements	(5.2)	(5.6)
Foreign currency exchange rate changes	55.6	30.4
Acquisitions, divestitures, and other	(4.2)	(2.2)
Benefits paid	51.7	59.5
Fair value of plan assets at end of plan year	1,229.6	1,093.5	$ 974.3
Funded status — assets less than benefit obligation	(392.7)	(356.4)
Unrecognized prior service cost (credit)	17.4	17.5
Unrecognized net actuarial loss (gain)	360.3	318.7
Net amount recognized	(49.8)	(55.2)
Amounts recognized in the Consolidated Balance Sheets
Prepaid benefit cost (non-current)	0.2	0.1
Current benefit liability	(10.2)	(9.1)
Non-current benefit liability	(382.7)	(347.4)
Net liability recognized	(392.7)	(356.4)
Accumulated other comprehensive loss (pre-tax):
Prior service cost (credit)	(17.4)	(17.5)
Actuarial loss (gain)	360.3	318.7
Pension and other postretirement benefit plans, AOCI before tax	342.9	301.2
Net amount recognized	$ (49.8)	$ (55.2)